I just did the rear of the wheel openings (like I did on my 04 GO). Almost unnoticeable and $20. Spending $5-8k sounds a bit excessive. Make sure you do what makes you happy, not what makes the next owner happy.
https://www.amazon.com/gp/product/B00B3K1QMW/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B00B3K1QMW/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1